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Prepainted Galvalume Steel Coil
Prepainted Galvalume Steel Coil
Prepainted Galvalume Steel Coil (PPGL Coil) is made by applying or laminating various organic coatings or plastic films onto a galvalume steel substrate. It combines the excellent corrosion resistance of galvalume with the decorative appeal of color coatings, providing a long service life and attractive look. Ideal for coastal or corrosive environments, it is well-suited for industrial processing such as rolling and shearing. Commonly used in large-scale construction projects—including roofing, wall cladding, and enclosure systems—it can be cold-formed into various corrugated sheets or structural profiles.
At Zhaojian, we supply premium color-coated galvalume steel coils with customizable thickness, coating, and colors to meet your specific project needs. Supported by strict quality control and international certifications, our PPGL coils are designed to last—even in the harshest environments.
At Zhaojian, we supply premium color-coated galvalume steel coils with customizable thickness, coating, and colors to meet your specific project needs. Supported by strict quality control and international certifications, our PPGL coils are designed to last—even in the harshest environments.
Product Specifications
| Item | Typical Values and Notes |
| Base Material | Galvalume steel coil (substrate standards: ASTM A792, JIS G3302, GB/T, etc.) |
| Coating Composition | ~55% Aluminum, ~43.5% Zinc, ~1.5% Silicon (excellent corrosion resistance) |
| Thickness Range | 0.12 – 2.0 mm (common range: 0.13 – 1.25 mm) |
| Width Range | 600 – 1250 mm (up to 1500 mm for custom orders) |
| Paint Coating Types | PE (Polyester), SMP (Silicone Modified Polyester), PVDF, HDP, etc. |
| Coating Structure | Common structure: 2/1 or 2/2 (double coat/double bake) front and back |
| Paint Thickness | 15 – 30 µm (varies by coating system) |
| Metal Coating Weight | AZ30 – AZ275 g/m² (commonly AZ50 / AZ100 / AZ150) |
| Color Options | RAL chart or custom colors; gloss, matte, wrinkle, or printed finishes available |
| Mechanical Properties | Yield strength options: 250 / 280 / 300 / 350 / 450 / 550 MPa |
| Bending Radius | Top side: ≤ 3T; Bottom side: ≤ 4T (T = material thickness) |
| Thickness Tolerance | ±0.01 mm (custom tolerances available) |
| Coil Inner Diameter | 508 mm or 610 mm (custom sizes on request) |
| Coil Weight | Typically 3 – 8 tons per coil (up to 12 tons available) |
| Abrasion Resistance | MEK rubbing test: 100+ cycles with no paint loss |
| Surface Spangle Options | Regular spangle, zero spangle, minimized, or big spangle |
| Packaging | Standard export package: waterproof film + kraft paper + steel straps |
| Certifications | ISO 9001, ISO 14001, OHSAS 18001, SGS / TUV inspection |
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Advantages
Pre-painted Galvalume Coil delivers steel durability with aluminum-zinc protection and decorative color — a smart choice for lasting style.
- Offers enhanced corrosion resistance over galvanized steel, making it well-suited for coastal areas and harsh environments.
- Excellent formability and weldability, perfect for profile fabrication and roll forming applications.
- Wide selection of colors available, offering strong decorative appeal.
- Customizable processing options, including slitting, protective film coating, and printed patterns, according to customer requirements.
Applications
Also known as Prepainted Aluzinc Steel Coil, PPGL coil is widely used in modern construction and manufacturing because of its durability, versatility, and stylish finish.
- Roofing and wall cladding panels
- Sandwich panel production
- Garage doors, rolling shutters
- HVAC ductwork and metal furniture
- Solar panel mounting systems
Buyer’s Guide
- Thickness & Width: For large roofing or cladding projects, use 0.5–1.0 mm thick material and 1000–1250 mm wide. For lightweight or decorative profiles, 0.13–0.35 mm thickness is appropriate.
- Paint Type Advice:PVDF or SMP is recommended for long-term outdoor color retention. PE is a cost-effective choice for general or indoor use.
- Metal Coating Grade:AZ100–AZ150 is recommended for outdoor exposure; AZ50 is suitable for indoor or light-duty applications.
- Mechanical Grade: For deep drawing or high-strength bending, ≥350 MPa is preferred. Standard roofing panels can use 250–300 MPa.
- Customization Options: Printing, slitting, perforation, protective film, and sample services are available upon request.
